Txij li thaum lub iPhone tau txais qhov projected capacitive touch screen, ntau tus qauv tsim qauv tau tshwm sim nyob rau lub sijhawm luv luv. Tus yam ntxwv ntawm qhov projection capacitive touch screen yog tias lub sensor nyob hauv qab ntawm lub vijtsam kov thiab npog nrog iav tiv thaiv. Qee cov khoom tshiab nyob rau hauv kev tsim kho tau txais ib qho kev tsim ib sab, uas yog, tag nrho cov txheej txheem kev hnov qab yog tsim los ntawm ib sab ntawm ib qho substrate. Hauv qhov tam sim no thinnest projected capacitive touch screen tsim, txhua txheej siv ntau txheej txheej txheej txheem sputtering. Raws li lub hauv paus ntsiab lus ntawm qhov projected capacitive touch screen nrog ob lub pob tshab conductive txheej, ntau yam kev hloov pauv tuaj yeem ua rau hauv kev tsim. Piv txwv li, siv ultra-nplua (10 ^ ni) xov hlau tuaj yeem hloov tau ib txheej txheej, yog li txo cov sputtering ntawm ib txheej ntawm ITO. Tam sim no, feem ntau cov xov tooj ntawm tes thiab kos npe sau cov laug cam ntawm kev ua lag luam yog coated nrog ITO ntawm cov txheej PET sib txawv. Tsis tas li ntawd, cov ntxaij vab tshaus kov kuj tseem siv ob sab txheej lossis ib sab ITO coated iav ntawm ob txheej txheej.
(1) Zaj duab xis qauv
Nyob rau hauv qhov projected capacitive touch screen, ITO zaj duab xis tuaj yeem tsim thiab etched nyob rau hauv ntau txoj kev, tab sis cov nqi tsim khoom yog tib yam, thiab vim muaj kev sib raug zoo ntawm qhov kov sensor thiab hluav taws xob tswj system, nws nyuaj rau hais. tus qauv twg zoo dua li lwm cov qauv.
Tus qauv siv nyob rau hauv thaum ntxov iPhone lub projected capacitive touch screen yog qhov yooj yim tshaj: lub ITO ntawm ob sab ntawm lub iav yog etched rau hauv 10 kab nrog ib kab dav ntawm lram thiab ib tug nrug ntawm 5 hli nyob rau hauv pem hauv ntej, thiab sab nraum qab yog etched rau hauv 15. kab, nrog ib txoj kab dav ntawm 5 hli thiab qhov sib nrug ntawm 37. Nyob rau hauv kab txheej txheej ntawm ^m, cov kab uas tsis sib txuas (kev sib cais) yog tshwj tseg ntawm 10 kab ntawm kab ke kab ke kom muaj kev sib koom ua ke ntawm optical nyhuv. Hom kev tsim no yuav tsum tau siv thev naus laus zis yooj yim, tab sis yuav tsum muaj lub zog ua haujlwm ntawm tus maub los los tsim cov kev tswj xyuas meej.
Cov qauv feem ntau yog pob zeb diamond sib cuam tshuam (nws yog square 45 degree diagonally tso). Lub electrode Islands tuaj ntawm cov qauv no tau ntseeg tau txuas nrog (qhov luv tshaj plaws kev sib txuas), thiab thaj tsam ntawm lub vijtsam yog siv rau qhov loj tshaj plaws kom nkag siab tus ntiv tes capacitance. Cov qauv pob zeb diamond tau muab faib ua tiav Muaj ob txheej, ib qho yog kab rov tav pob zeb diamond-puab kab, lwm qhov yog ntsug pob zeb diamond-puab kab, thiab kev sib tshuam ntawm cov xov hlau zoo li cov txuas me me. Qhov loj ntawm pob zeb diamond-zoo li cov kob nyob ntawm cov chaw tsim khoom, feem ntau ntawm 4 thiab 8 hli. Tam sim no, feem ntau projected capacitive touch screens siv lub pob zeb diamond-zoo li tus qauv.
(2) Tus neeg xyuas pib square tsis kam ntawm lub vijtsam kov feem ntau ua tiav nrog 15011 / chaw nres nkoj (unit: n / (m2 * mil)) ITO coated iav. Txhawm rau tsim cov qauv nrog kab dav ntawm 20 teev tsaus ntuj, nws yuav tsum ua kom tiav los ntawm kev siv tshuab photoetching, xws li hauv LCD vaj huam sib luag factories. Photolithography ablation tus neeg sawv cev siv nyob rau hauv cov txheej txheem. Qhov tuab ntawm ITO, qhov me me ntawm qhov tsis kam, qhov zoo dua ntawm cov teeb liab-rau-suab nrov piv, tab sis lub teeb xa tawm tsis zoo; ntawm qhov tsis sib xws, qhov thinner ITO, qhov zoo dua lub teeb xa hluav taws xob, tab sis lub teeb liab-rau-suab nrov piv yog qhov phem dua. Thaum siv PET (pob tshab yas, tshwj xeeb tshaj yog rau kev tsim cov pob zeb hauv av fwj) raws li cov substrate, cov kab dav feem ntau yog 100 ~ 200 jim. Kev tshuaj ntsuam luam ntawv, duab etching lossis laser txiav tuaj yeem siv los ua kab dav ntawm 30 ~ 5 (Vm) ntawm PET. Cov txheej txheem ntawm tus qauv tseem tab tom kawm. Hauv kev siv tswv yim, muaj ib txheej thib peb IT0 nyob rau hauv qab raws li cov txheej txheem tiv thaiv kom cais cov cuam tshuam ntawm LCD. Cov txheej thaiv thaiv feem ntau yog siv cov square tsis kam ntawm 150 ~ 300fi / □. Cov kab teeb liab ntawm lub vijtsam kov yog feem ntau Nws yog ua los ntawm molybdenum / aluminium / molybdenum khoom, uas tseem plated tom qab ITO sputtering siv lub tshuab nqus tsev magnetron sputtering txheej txheem.
